EI
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EAM Investors’s iRhythm Holdings IRTC Stock Holding History

EAM Investors’s Portfolio IRTC Stock Details IRTC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-37,092
Closed -$6.58M – 326
2025
Q4 		$6.58M Sell
37,092
-749
-2% -$133K 0.73% 21
2025
Q3 		$6.4M Buy
37,841
+3,873
+11% +$616K 0.73% 29
2025
Q2 		$5.23M Buy
+33,968
New +$4.39M 0.79% 33
2022
Q4 		– Sell
-7,333
Closed -$919K – 304
2022
Q3 		$919K Buy
7,333
+298
+4% +$43K 0.2% 228
2022
Q2 		$760K Sell
7,035
-6,102
-46% -$808K 0.19% 235
2022
Q1 		$2.07M Buy
+13,137
New +$1.69M 0.39% 88
2020
Q4 		– Sell
-9,575
Closed -$2.28M – 343
2020
Q3 		$2.28M Sell
9,575
-9,160
-49% -$1.62M 0.54% 46
2020
Q2 		$2.17M Sell
18,735
-6,647
-26% -$733K 0.48% 66
2020
Q1 		$2.06M Buy
+25,382
New +$2.1M 0.64% 54
2019
Q1 		– Sell
-23,095
Closed -$1.6M – 288
2018
Q4 		$1.6M Sell
23,095
-27,465
-54% -$2.08M 0.44% 90
2018
Q3 		$4.79M Sell
50,560
-4,468
-8% -$389K 0.71% 16
2018
Q2 		$4.46M Sell
55,028
-13,858
-20% -$969K 0.7% 12
2018
Q1 		$4.34M Sell
68,886
-3,707
-5% -$229K 0.72% 14
2017
Q4 		$4.07M Sell
72,593
-29,030
-29% -$1.52M 0.73% 12
2017
Q3 		$5.27M Buy
101,623
+76,681
+307% +$3.47M 0.7% 22
2017
Q2 		$1.06M Buy
24,942
+4,106
+20% +$150K 0.18% 192
2017
Q1 		$783K Buy
+20,836
New +$717K 0.12% 229

Other funds holding IRTC

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Holocene Advisors
Holocene Advisors New York $41.5B AUM 42.97% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $481B AUM 26.39% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

EAM Investors's IRTC Position: Q1 2026 in Review

EAM Investors sold out of iRhythm Holdings (IRTC) in Q1 2026, closing a stake of 37,092 shares — an estimated $6.58M sold.

EAM Investors first reported a position in IRTC in Q1 2017 and held it in 17 quarters. The position peaked at $6.58M in Q4 2025. 304 funds tracked by Wall St. Rank hold IRTC as of Q1 2026.

  • EAM Investors reported no remaining iRhythm Holdings position as of Q1 2026 after selling out during the quarter.
  • EAM Investors sold 37,092 iRhythm Holdings shares in Q1 2026, an estimated $6.58M.
  • EAM Investors first reported a position in iRhythm Holdings in Q1 2017 and held it in 17 quarters.
  • EAM Investors's iRhythm Holdings position peaked at $6.58M in Q4 2025.
  • 304 funds tracked by Wall St. Rank held iRhythm Holdings as of Q1 2026.

Based on EAM Investors's 13F filing for Q1 2026, filed 13 May 2026.